On Oct 7, 2011, at 2:45 AM, Petr PIKAL wrote:
Hi
Hello:
Is there a way to get a mean from values stored in different rows?
The data looks like this:
YEAR-1, JAN, FEB, ..., DEC
YEAR-2, JAN, FEB, ..., DEC
YEAR-3, JAN, FEB, ..., DEC
The details of datA entry may need to be fleshed out. MORE SPEFIC ADVICE
What I want is the mean(s) for just the consecutive winter months:
YEAR-1.DEC, YEAR-2.JAN, YEAR-2.FEB
YEAR-2.DEC, YEAR-3.JAN, YEAR-3.FEB
etc.
Isn't colMean(yourdata) what you want?
Perhaps:
colMeans( dat[ , c("JAN", "DEC", "FEB")] )
--
David Winsemius, MD
West Hartford, CT
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